Dial control knob for medical instrument



FIG. 1 is a top plan view of a dial control knob for medical instrumentshowing my new design;

FIG. 2 is a side elevational view taken from the left of FIG. 1;

FIG. 3 is a front elevational view; and,

FIG. 4 is a rear elevational view.

The dial control knob is symmetrical about its axis.

The ornamental design for a dial control knob for medical instrument, asshown and described.